Injection valve means



June 23, 1931.

Filed 001:. 8, -1927 fmproved injection valve '1t-Or controlling the Patented Jane 23, 1931 PATENT-f OFFICE YALEIX'AivnER. WINTON, OF LAKEWOOD, OHIO INJEOTON VALVE MEANS Application sied catchers', 1927.' serial No. 224,917.

rlhis invention relates to injection valve means for internal combustion engines, ot the solid fuel injection type.

in Object of the invention is to provide' an lation ot the'power output ot the engine.

Further objects and advantages will be apparent from the following4 description taken in connection with the accompanying drawing which is a sectional detail 'of an` inject-ion valve" and adjacent' parts of the engine.

` rihe principal parts of the engine ar-e generally ot standard construction and arrangement', each cylinder being shownas a liner 1 losed at the top by a cylinder head 2having a cavity 3 forming a combustion chamber. 1n eachcylinder moves a' pistont. Each piston t forms with 1ts cylinder head portion and that portion of the cylinderwalls abovev f it, an expansion chamber by which energy known arrangement.

1n the cylinder headextending laterally ot the combustion chamber3 isv an opening 16 into which 1s fitted an injection valve assembly. Seated 1n the opening 16 isa chambered sleeve 17 beingrstepped .down toward the combustion chamber to malte connection with a cap sleeve 18 having a tace exposed in the combustion chamber.V Extending through an opening in the cap sleeve 18 is a nozzle 19 havin@ a iange secured between a shoulder on the cap sleeve 18 and the end Ot the chambered sleeve 17. The nozzle 19 has a tapered face projecting slightly 'beyond the face of the cap sleeve 18 into the combustion chamber, and is finished inside conically to form a seat Jfor a needletype of valve. The apex ot the seat is continued somewhat toward the combustion chamber in a deadended bore of small diameter. Between the tapered d? tace of the nozzle member and this bore are drilled a number of very tine holes 20 eXtending generally outwards of the small bore of the nozzle and each terminating in an orice in the tace ot the nozzle. At the opposite en'd of the chambered sleeve 17 is a gland 21 Y havinga long bore aligned with that of the nozzle 19. The chamber of the sl-eeve 17 extends between the bore of the gland 21 and that of the nozzle 19, and Vis of somewhat larger diameter than the boreof th-e gland. Communicatingwith this chamber is a lateral passage 22'en'larged and tapped at its-Outer extremity to receive the threaded endV of a fuel lead23.` Extending through the gland,

. chambered sleeve, and to the nozzle is avalvev 24. The valve is a very close sliding lit in the gland and terminates in aconical face exactly tting. the conical seat of the nozzle. Fitting over the Outer portion of the sleeve 117 and secured with the cylinder head 2 as by means ot bolts 25, andV thus securing the sleeve17, is a bracket 26.' The bracket is gcnerally hollow' or tubular and terminates out wardly of the cylinder head in an enlarged cylindrical cavity 27 closed by a cap 28. The cap 28 terminates in aportion having in-V ternal square threads 29 of steep pitch, into which is threaded a screw 30. The stem portion ot the valve V24 is secure-d as by a vpin 31 with a shouldered hea'd32 having an ex@ tension 33 projecting through a-bore in the screw 30 and squared otf at'its extremity. Upon the Outer end Ot the screw 30' is secured an adjusting arm 34C, and the inner end of the screw is of adiameter corresponding with 'against which bearsan end of the compression spring 39`-the opposite end ot which bears against the cap28. The torwardportion of the cage 36 bears in the bracket 26 and'contains a compression spring 37 bearing against the shoulder of; the valve head 32.

inn

The spring 39 is of relatively greater strength than the spring 37 whereby the combined tendency of' the springs is to maintain the parts in the relation shown in Fig. 3,that is, the spring 39 will maintain the valve closed, clearance 40 being provided between the flange 38 and the bracket 2G, and the spring 37 will tend to maintain the shoulder on the valve head 32 against the sleeve 35.

The bracket 2G is slotted to receive the yoke portion 4l of an actuating lever 42 pivotally mounted on a pin 43 supported in the bracket, the yoke portion of the lever being adapted to bear against the head of the cage 36 to move the same in valve openingdirection. The opposite end of the lever 42 carries a cam follower 44 arranged for actuation by a cam 45 upon a shaft 4G extending along a side of the engine and arranged to be driven at half crank shaft speed. The follower is maintained against the cam by a spring 47.

The arrangement just described will be seen to be such that upon actuation of the cam follower 44 by the cam 45 the lever 42 will move the cage 36 in valve opening direction against spring 39. Such movement of the cage will be accompanied by similar move` ment of the sleeve 35 allowing the valve head to recede carrying with it the valve under the action of the spring 37. Such opening movement of the valve however, will be limitcd by the adjusted position of the screw 30, so that the stroke of the valve will depend upon the clearance 48 between the screw 3() :md the head 32, the stroke of the cage 36 however, being uniform under all conditions oi" operation.

Thus the valve is provided with a stem portion such as the head 32 having a portion with abutting relation with intermediate means such as the sleeve 35 and associated cage against which intermediate means the spring 29 acts to urge the valve to seated relation. l have also provided gear fo 1 periodically mou ing this intermediate means against the spring, such gear including the lever 42, and in addition l have provided resilient means such as thespring 27, effective between the valve and the intermediate means to cause the valve to follow movements of the intermediate means effected by said gear, such fol lowingmovements of the valve, however, being adjustably limited by the setting of the screw 30 which acts as a stop member.

The adjusting arm 34 of each of the injection valves may have connection with a common link 49 which has connection for actuation by a governor.

Within each fuel lead 23 extends a tubular filter screen of very fine mesa wire gauge rolled upon itself, the inner end of the screen being closed as at 5G, the outer end terminating in a screen head 57. The outer end of the lead is in threaded relation with a fitting 58 carrying a plug 59 having a cylindrical extension clearing the inner walls of' the fitting and bearing against the screen head 57 and having` a number of lateral openings G0. Each fitting 58 is provided with a bleed valve 61, preferably of the needle type indicated, whereby air may be released from that portion of the system.

Each fitting 58 makes connection with a common fuel supply line 62.

What I claim is:

1. Valve means for the purpose described comprising a valve having a stem portion, a movable intermediate member and spring means, said stem portion and said intermediate member having abutting portions and said spring means being associated with said intermediate member to act through said abutting portions to urge said valve to seated relation, gear for periodically moving said intermediate member against said spring means, resilient means effective between said valve and said intermediate member to cause said valve to follow movements of said intermediate member effected by said gear, and means for adjustably limiting said follow ing movements of said valve.

2. Valve means lor the purpose described comprising a valve having a stem portion, a movable intermediate member and spring means, said stem portion and said intermediate member having abutting portions and said spring means being` associated with said intermediate member to act through said abutting portions to urge said valve to seated relation, gear for periodically moving said intermediate member against said spring means, compression spring means effective be.- tween said valve and said intermediate member to cause said valve to follow movements of said intermediate member effected by said gear, and means for adjustably limiting said following movements of said valve.

ln testimony whereof I hereby affix my signature.

ALEXANDER VVINTON. 

